Beyond Yoga Under Lock and Keyhole Tank in Black. - size XS (also in L, S) Beyond Yoga Under Lock and Keyhole Tank in Black. - size XS (also in L, S) Cotton blend. Crisscross shoulder straps. Built-in bra shelf. Jersey knit fabric. BEYR-WM253. SP4301. Beyond Yoga is ideal for modern living, from carpool to class, and lounging to lunch. Built on the belief that confidence is not a size but a state of mind, Beyond Yoga meticulously designs and tests each piece to ensure optimal comfort and functionality. Beyond Yoga is designed to fit a variety of body types, shapes and sizes without compromising comfort, support and style.